Jurnal Riset Akuakultur
Vol 12, No 2 (2017): (Juni 2017)

PERTUMBUHAN DAN SINTASAN LARVA DAN BENIH IKAN KERAPU SUNU Plectropomus leopardus TURUNAN KETIGA (F-3) DARI INDUK HASIL SELEKSI

Ahmad Muzaki (Balai Besar Penelitian dan Pengembangan Budidaya Laut.)
Sari Budi Moria Sembiring (Unknown)
Ida Komang Wardana (Unknown)
Haryanti Haryanti (Unknown)



Article Info

Publish Date
19 Oct 2017

Abstract

Pertumbuhan dan sintasan larva dan benih kerapu sunu turunan ketiga (F-3) dari induk turunan kedua (F-2) hasil seleksi telah diamati di Balai Penelitian dan Pengembangan Budidaya Laut, Gondol. Induk F-2 diseleksi menggunakan marka indikator tumbuh cepat PL-03 (alel tunggal berukuran 370 bp). Penelitian ini bertujuan untuk mengevaluasi keragaan pertumbuhan dan sintasan larva dan benih kerapu sunu F-3 serta pewarisan sifat tumbuh cepat dari induk kerapu sunu (F-2) kepada benih kerapu sunu F-3. Pembenihan menggunakan induk kerapu sunu F-2 dengan sifat tumbuh cepat (membawa marka PL-03) dan tanpa sifat tumbuh cepat. Telur dan larva yang dihasilkan dipelihara sebagai turunan F-3 hingga berukuran benih dan dibesarkan selama 10 bulan pemeliharaan. Hasil pengamatan sintasan larva kerapu sunu F-3 dari induk membawa marka PL-03 adalah sebesar 10,6% ± 9,1%; sedangkan larva F-3 dari induk yang tidak membawa sifat tumbuh cepat hanya sebesar 2,7% ± 1,7%. Benih F-3 dari induk membawa marka PL-03 dapat dipanen saat mencapai ukuran 2,5-3,0 cm pada umur 38 ± 2 hari, sedangkan benih F-3 dari induk tanpa marka PL-03 pada umur 40 ± 1 hari. Selanjutnya benih kerapu sunu F-3 dari induk yang mempunyai marka PL-03 yang dipelihara selama 10 bulan memiliki laju pertumbuhan harian lebih baik (3,11%) dibandingkan benih kerapu sunu F-3 tanpa marka PL-03 (3,01%). Sintasan benih kerapu sunu F-3 dengan marka PL-03 tidak berbeda nyata dengan yang tidak mempunyai marka PL-03. Persentase benih F-3 turunan dari induk F-2 dengan sifat tumbuh cepat yang membawa marka PL-03 sebesar 45%.The growth and survival rate of the third generation (F-3) of coral trout grouper larvae and fry from the genetically selected broodstock were observed at the Institute for Mariculture Research and Development, Gondol. The F-2 broodstock were selected using the fast-growing marker indicator, PL-03 (single allele of 370 bp in size). The aim of this study was to determine the growth performance and survival rate of larvae and fry of F-3 coral trout groupers, as well as inheritance of fast growth trait from the F-2 broodstock to the F-3. The eggs and larvae of F-3 produced from F-2 broodstock with fast growth trait (having PL-03 marker) and without fast growth trait were reared to reach fry stage for 10 months. The results showed that the survival rate of the F-3 larvae from broodstock with PL-03 marker was 10.6% ± 9.1%, while F-3 larvae from the broodstock without fast growth trait only reached 2.7% ± 1.7%. Fry (F-3) with PL-03 marker reached the optimum harvest size of 2.5-3.0 cm at 38 ± 2 days old, while the F-3 fry of broodstock without PL-03 marker took relatively longer to reach that size (40 ± 1 days age). The F-3 from the broodstock with PL-03 marker reared for 10 months had better growth rate (3.11%) compared to F-3 fry without PL-03 marker (3.01%). The survival rate of F-3 fry with PL-03 marker was not significantly different to F-3 fry without PL-03 marker. The percentage of F-3 fry from the broodstock of F-2 with fast growth trait was 45%.

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Journal Info

Abbrev

jra

Publisher

Subject

Agriculture, Biological Sciences & Forestry Environmental Science

Description

Jurnal Riset Akuakultur as source of information in the form of the results of research and scientific review (review) in the field of various aquaculture disciplines include genetics and reproduction, biotechnology, nutrition and feed, fish health and the environment, and land resources in ...